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Yeah, I know, Rob. I've heard it, too. It doesn't make sense to me,
because a good parser should be able to see that the WHERE is part of
the join, but then again maybe I over-estimate the parser. Or maybe
it's a function of the SQL execution engine? Maybe DB2 is smarter than
the average bear?
I'd really like some of the experts to weigh in on this one. I've
started moving all of my JOINs to the JOIN anyway, because I think it's
more self-documenting, but I'd sure like to know the technical merits
(or lack thereof). You know me, I hate "urban computer legends".
Joe
Joe,
I don't think it's just the positioning of the tables. I've heard this
ditty on using the where on the join clause being a big performance boost
before.
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